<template>
  <div>
    <!-- //自定义事件 -->
    <TodoHeader @addTodo="addTodo"></TodoHeader>

    <TodoList
      :todos="todos"
      :checkTodo="checkTodo"
      :deleteTodo="deleteTodo"
    ></TodoList>
    <DoneList :todos="todos"></DoneList>
  </div>
</template>

<script>
import TodoHeader from "./components/TodoHeader.vue";
import TodoList from "./components/TodoList.vue";
import DoneList from "./components/DoneList.vue";
export default {
  name: "App",
  components: { TodoHeader, TodoList, DoneList },
  data() {
    return {
      todos: JSON.parse(localStorage.getItem("todos")),
    };
  },
  methods: {
    //添加一个todo项
    addTodo(todoObj) {
      this.todos.unshift(todoObj);
    },
    //勾选或取消勾选
    checkTodo(id) {
      this.todos.forEach((todo) => {
        if (todo.id === id) todo.done = !todo.done;
      });
    },
    //删除
    deleteTodo(id) {
      this.todos = this.todos.filter((todo) => todo.id !== id);
    },
    //修改
    updataTodo(id, title) {
      this.todos.forEach((todo) => {
        if (todo.id === id) {
          todo.title = title;
        }
      });
    },
  },
  watch: {
    todos: {
      deep: true,
      handler(value) {
        localStorage.setItem("todos", JSON.stringify(value));
      },
    },
  },
  mounted() {
    this.$bus.$on("checkTodo", this.checkTodo);
    this.$bus.$on("deleteTodo", this.deleteTodo);
    this.$bus.$on("updataTodo", this.updataTodo);
  },
  beforeDestroy() {
    this.$bus.$off("checkTodo");
    this.$bus.$off("deleteTodo");
    this.$bus.$off("updataTodo");
  },
};
</script>
<style>
body {
  margin: 0;
  padding: 0;
  font-size: 16px;
  background: #cdcdcd;
}
section {
  margin: 0 auto;
}

li input {
  position: absolute;
  top: 2px;
  left: 10px;
  width: 22px;
  height: 22px;
  cursor: pointer;
}

p {
  margin: 0;
}

li p input {
  top: 3px;
  left: 40px;
  width: 70%;
  height: 20px;
  line-height: 14px;
  text-indent: 5px;
  font-size: 14px;
}

li {
  height: 32px;
  line-height: 32px;
  background: #fff;
  position: relative;
  margin-bottom: 10px;
  padding: 0 45px;
  border-radius: 3px;
  border-left: 5px solid #629a9c;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
}

ol li {
  cursor: move;
}

ul li {
  border-left: 5px solid #999;
  opacity: 0.5;
}

li a {
  position: absolute;
  top: 2px;
  right: 5px;
  display: inline-block;
  width: 14px;
  height: 12px;
  border-radius: 14px;
  border: 6px double #fff;
  background: #ccc;
  line-height: 14px;
  text-align: center;
  color: #fff;
  font-weight: bold;
  font-size: 14px;
  cursor: pointer;
}

@media screen and (max-device-width: 620px) {
  section {
    width: 96%;
    padding: 0 2%;
  }
}

@media screen and (min-width: 620px) {
  section {
    width: 600px;
    padding: 0 10px;
  }
}
</style>

